Article
Chemistry, Applied
Yi Zuo, Yu Chen, Tonghui Li, Jiaojiao Yu, Hong Yang, Min Liu, Xinwen Guo
Summary: A bulky TS-1 material with volume-controllable intracrystal macro pores was successfully synthesized by adding nanosized CaCO3 particles and applying an acidity posttreatment. The addition of CaCO3 accelerated the crystallization process and inhibited the formation of extraframework Ti, resulting in improved catalytic performance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Antonietta Mancuso, Vincenzo Vaiano, Pasqualmorica Antico, Olga Sacco, Vincenzo Venditto
Summary: This work investigates the photocatalytic hydroxylation of benzene to phenol using a photoreactive polymer composite, N-doped TiO2 (N-TiO2) embedded into a syndiotactic polystyrene aerogel (N-TiO2/sPS). The composite exhibits enhanced phenol selectivity and yield compared to bare N-TiO2. The best results were achieved under visible light and acidic conditions, with a phenol selectivity of 98%, yield of 57%, and benzene conversion of 58%. The composite material can be recovered and reused without significant loss of photoreactivity and reduction in phenol yield.
Article
Chemistry, Multidisciplinary
Zhongpeng Zhu, Long Pan, Zilu Liu, Jie Zhao, Zhiping Tao, Yujian He
Summary: In this study, a new conjugated microporous polymer (Fc-POP) was constructed using ferrocene as an active site and building block. A carbon nanotube composite (CNTs@Fc-POP) with tubular structure was obtained through innovative modification, showing high efficiency in benzene hydroxylation to phenol under light irradiation. The synergistic effect between carbon nanotubes and ferrocene significantly improves the yield of phenol, expanding the potential applications of CNTs in photocatalysis.
Article
Engineering, Chemical
Bin Ma, Yancai Zhu, Hongliang Hong, Liyun Cui, Haoliang Gao, Di Zhao, Bin Wang, Rongfei Zhou, Weihong Xing
Summary: High-quality large-area silicalite-1 membranes were successfully fabricated on monolithic supports using a single-step secondary growth method. The monolithic membrane exhibited advantages in packing density and mechanical strength compared to tubular membranes. The separation performance of the monolithic membrane was comparable to that of smaller tubular and disc membranes, and showed good reproducibility.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Zhenyuan Yang, Yanan Guan, Lei Xu, Yangtao Zhou, Xiaolei Fan, Yilai Jiao
Summary: This work presents a method to prepare hierarchical titanium silicalite-1 (TS-1) zeolites with high tetra-coordinated framework Ti species content. The synthesis involves the preparation of aged dry gel and the treatment of the aged dry gel with tetrapropylammonium hydroxide (TPAOH) solution under hydrothermal conditions. The systematic studies show that specific synthesis conditions enable the synthesis of hierarchical TS-1 with desirable physiochemical properties.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Engineering, Environmental
Chunzheng Wang, Ningkun Xu, Ke Huang, Bin Liu, Peihua Zhang, Ge Yang, Hailing Guo, Peng Bai, Svetlana Mintova
Summary: An emerging synthetic route for the co-synthesis of dimethyl oxalate (DMO) and dimethyl carbonate (DMC) via the indirect oxidative carbonylation of CH3OH is presented. The catalytic performance strongly depended on the catalyst activation, as the heat treatment could tune the silanols around the Pd species on the silicalite-1 zeolite. The best performing catalyst had an average Pd nanoparticle size of 3.2 nm and Pd loading of 0.48 wt%, showing high stability for at least 200 h.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Yitao Zhao, Haoran Xing, Qiang Wang, Yinjuan Chen, Jiawei Xia, Hui Xu, Guangyu He, Fengxiang Yin, Qun Chen, Haiqun Chen
Summary: Efficient and selective oxidation of arene C-H bonds has long been a challenging goal. Here, we present a facile and practical strategy to fabricate an N-doped reduced graphene oxide (NRGO) based single-atom Cu catalyst (SACu-NRGO) for the selective oxidation of benzene to phenol at room temperature. The SACu-NRGO exhibits excellent catalytic performance with a selectivity of 98.6% towards phenol, thanks to the fully exposed and homogeneously dispersed CuN3 active sites anchored by adjacent pyrrolic N atoms in the NRGO skeleton. Furthermore, the structure of the single-atom active sites and the mechanism of the oxidation process are elucidated in depth through DFT calculations.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Jingjing Wang, Xiaohua Shen, Yunfei Zhang, Jianjun Lu, Miaoqing Liu, Lixia Ling, Junjie Liao, Liping Chang, Kechang Xie
Summary: The hydrothermal approach was used to synthesize hierarchical TS-1 material, and the obtained materials with significant intracrystalline mesopores showed improved catalytic performance and stability compared to traditional TS-1, thanks to the variation of the number of ethylene oxide groups.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Jie Liu, Yong Liu, Hongchao Liu, Yi Fu, Zhiyang Chen, Wenliang Zhu
Summary: ZnO-based catalysts, especially supported on silicalite-1, show excellent performance in the PDH reaction with high propane yield and propylene selectivity, attributed to the interaction between ZnO species and silanol nests of the support. This study may pave the way for the development of highly efficient PDH catalysts.
Review
Chemistry, Physical
Nafiseh Rahmani, Ahmad Amiri, Ghodsi Mohammadi Ziarani, Alireza Badiei
Summary: Mesoporous transition metal-based catalysts act as efficient catalytic supports and catalysts, providing high selectivity and controllability in the catalysis process. This emerging area offers researchers the opportunity to introduce novel heterogeneous catalysts.
MOLECULAR CATALYSIS
(2021)
Article
Nanoscience & Nanotechnology
Qiu-Ping He, Yun Zou, Peng-Fei Wang, Xiao-ming Dou
Summary: Silicalite-1 zeolitic membranes were successfully fabricated on alpha-Al2O3 support using templated and template-free methods for vapor permeation separation of DCB isomers. The template-free zeolitic membrane showed higher p-DCB selectivity due to fewer inter-crystalline gaps, achieving selectivity values of up to 165 and 113 for p-/m-DCB and p-/o-DCB binary systems, respectively.
Article
Chemistry, Multidisciplinary
Chetana R. Patil, Prashant Niphadkar, Sanjay P. Kamble, Chandrashekhar Rode
Summary: Hierarchical TS-1 materials were successfully synthesized and modified for hydroxylation of anisole, producing industrially important chemicals OMP and PMP. The effects of operational parameters on the reaction were studied, and it was found that DTS-1 catalyst exhibited higher conversion and selectivity compared to TS-1 catalyst, possibly due to the increased number of active sites and better mass transfer performance.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Chemical
Bin Wang, Yulei Wang, Xinping Li, Shenglai Zhong, Rongfei Zhou
Summary: Increasing the Si/Al ratio in zeolite membranes enhances surface hydrophobicity and moisture resistance. Bilayer silicalite-1/SSZ-13 membranes with gradient pores and CO2 selectivity exhibit high separation efficiency and moisture resistance. The modified silicalite-1 layer improves CO2 permeance and selectivity, resulting in stable separation performance in wet conditions.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Electrochemistry
Jianjun Wang, Xiangwen Chen, Yifei Ke, Zhiqian Jia, Xin Xu
Summary: In this study, waterproof and air-permeable PDMS/PTFE membranes were prepared and the effects of different fillers on their performance were investigated. The results showed that adding an appropriate amount of silicalite-1 can improve the waterproof and air permeability of the membranes, leading to significant improvements in the performance of metal-air batteries.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Jiangping Long, Suyang Tian, Sheng Wei, Hongqiao Lin, Guiwen Shi, Xupeng Zong, Yanhui Yang, Dan Yang, Yu Tang, Yihu Dai
Summary: Moderate steaming pre-treatment can enhance the catalytic activity of Co-containing zeolite catalysts, improving the specific reaction rate and propylene selectivity in non-oxidative propane dehydrogenation (PDH) reaction.
APPLIED SURFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)